Exclusive production of $ρ^0 ρ^0$ pairs in ultrarelativistic heavy ion collisions

Details Exclusive production of $ρ^0 ρ^0$ pairs in ultrarelativistic heavy ion collisions Exclusive production of $ρ^0 ρ^0$ pairs in ultrarelativistic heavy ion collisions

2010-08-23

arxiv.org/abs/1008.3802v2

Int.J.Mod.Phys.A26:741-743,2011

Physics

Nuclear Physics

Nuclear Theory

3 pages, 3 figures, talk by Mariola Klusek-Gawenda at Meson2010, June 2010, Krakow, Poland

Scientific paper

10.1142/S0217751X11052700

We disuss exclusive electromagnetic production of two neutral $\rho^0$~mesons and show the predictions for the $AA \to AA \rho^0 \rho^0$ reactions for gold-gold collisions at the energy of $\sqrt{s}$ = 200 GeV (RHIC) and for lead-lead collisions at the energy of $\sqrt{s}$ = 5.5 TeV (LHC). The elementary cross section is calculated with the help of the vector-dominance-model (VDM)-Regge approach which usually very well describes the experimental data at large $\gamma \gamma$ energy. The low-energy $\gamma \gamma \to \rho^0 \rho^0$ cross section is parametrized. The cross section for nuclear process is calculated by means of the equivalent photon approximation (EPA). We compare the results with realistic charge density with the results for monopole form factor.

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